Added sync_tools.gyp to all.gyp.

BUG=none
TEST=trybots

Review URL: http://codereview.chromium.org/1735018

git-svn-id: http://src.chromium.org/svn/trunk/src/build@46711 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

all.gyp

@@ -11,6 +11,7 @@
       'dependencies': [
         '../app/app.gyp:*',
         '../base/base.gyp:*',
+        '../chrome/browser/sync/tools/sync_tools.gyp:*',
         '../chrome/chrome.gyp:*',
         '../gfx/gfx.gyp:*',
         '../gpu/gpu.gyp:*',